[SI-LIST] Question
- From: "Rich Peyton" <p2rich@xxxxxxxxxxxxx>
- To: "'SI Newsgroup'" <si-list@xxxxxxxxxxxxx>
- Date: Mon, 17 Nov 2003 15:02:02 -0500
One of my notes states an equation for Parallel Wire Lines for transmission
lines
Z= (120/sqrtEr)*ln((2D)/d))
Where D is spacing between wires
d is diameter
Am I missing something? If you decrease the spacing (D), It should decrease
Impedance. When I use this formula it increases the Impedance.
Does anyone have an impedance formula for annulus material instead of solid
material?
Maybe it's just Monday and I'm doing something wrong?
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